Tool-operating mechanism.



PATENTED MAY 14, 1907.

P. K. PRIEST. TOOL OPERATING MEGHANISM.

APPLIOATIOK FILED SEP'LBB. 1905.

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PATENTED MAY 14, 1907 I. K. PRIEST. TOOL OPERATING MECHANISM.

APPLIOATIOF FILED SBPLZQ, 1905.

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FRED K. PRIEST, OF HILLSBGRO, NEW HAALPSHIRE.

TOOL-OPERATlNG MECHANlSM.

Specification of Letters Patent.

Patented. May 14, 1907.

Application filed September 29, 1905- Sarlal No. 280 599.

To all whom it may concern-.-

Be it known that I, FRED K. PRIEST, a citizen of the United States, and a resident of Ilillsboro, county 01' Nashua, State of New I-lampshire, have invented certain new and useful Improvements in ToolOperating Mechanisms, of which the following is a specification.

My invention relates to mechanical devices such as are driven by hand or by power and has for its object lo provide devices of this description with a positive driving mechanism.

Other objects will appear from the annexed detail description and the features of novelty will be pointed out in the. appended claims.

In the drawings Figure 1 is a side elevation of my im roved machine, Fig. 2, is an enlarged detail section of a portion thereof on line 22 of Fig. 1; Fig. 3 is an enlarged detail section of the driving connection to the llcxible shaft; Fig. 4 is a plan view thereof Fig. 5 is a partial section of the flexible shalt connection and Fig. 6 is a detail scetional view on the line 66 of Fig. 2.

A represents a stand or tripod having a table B. A forked support C is mounted on the table B so as to be capable of being rotated about a vertical pivot .D. The two members of the forked support C are provided at their free ends with hearings E in which is mounted a shaft F. A hollow casing (l is supported on the shaft l in such a. manner as to be capable of being rocked therein and has secured to it two members lil & l which form the balance arm or the machine. The member H of this balance urn: is provided at its free end with a weight J. The memher 1 is hollow and carries at its upper or free end a cup I the pur )ose of which will be more clearly described hereinafter. On the shaft F is secured a pinion K which meshes with a gear wheel K suitably supported on the forked support C. A llv wheel l, is also carried by the shaft F. A bevel gear M is mounted on the shaft l to turn therewith at a oint inside of the casing G. This bevel gear 'l meshes with a bevel pinion N secured to a shaft 0 which extends through the hollov member I and carries at its other end a crown gear P in the cup I. A cup Q similar to the cup I is pivoted to said cup I at Q and has secured to it a hollow member R having a slot R and which extends flexible shaft '1. The members R & S are adjustahly secured together by means of a thumb screw S in such a. manner that when the flexible shaft T, which carries at its free end the usual clipper or cutter U, is bent to different positions the member S may ride up and down on the member It, said member S being guided in the member R by the end 01 the screw 8 sliding in the slot R. A crown gear V similar to the crown gear P and meshing therewith is mounted in the on Q and is secured to the shaft T to the on of which the flexible shaft T is fastened. The crown gears P and V have the teeth made in such a manner that no matter in what positions the cups 1 and Q may be as the machine is used and the flexible shaft and cutter are moved about, the said crown gears will always remain in mesh.

In operation power is applied to the gear wheel K in any suitable manner as by means ol a handle K thus driving the pinion K and the shaft F and with it the bevel gear M and the fly wheel I. The bevel gear M being in mesh with the pinion N transmits motion thereto and thus drives the shaft 0 and With it the crown gear P. This crown gear P in turn drives the crown g ar Q and rotates the shaft T and the flexible shaft T and thus 0perates the clipper or cutter U. With my construction srpositive drive is thus obtained together with all the resulting advantages over a belt transmission, that is the highest speed for the amount of power applied is obtained, and the danger of the belt stretching, slipping and breaking is done away with. My device is also very compact and easy to manufaeture.

Various modifications may be made without departing from thonature of my invention.

I claim and desire to secure by Letters Patent,

l. The combination of the stand, the support pivoted to the stand to swing in a horizontal plane, the using pivoted to the upper portion of the support to swing in a vertical plane, the shaft co-axial with said casing, the drive wheel journaled on the support below the first named shaft and having a driving connection therewith, the balance arm rigidly connected with the casing, another shaft journaled in the balance arm and extending lengthwise thereof, meshing gears on the said into another hollow member S, to which is l afts, and a flexible shaft oper tively consecured the usual cover S for protecting the l nested with the shaft 11] the balance arm.

III)

2. The combination of the stand, the support to swine in :1vertieelplmie, the shaft eoport pivoted to the stand to swing in n horij axial ith said casing, means for turning zontel plane, the casing pivoted to the upper said shalt, the balance erin rigidlv eonneeted with the easing, another shaft journnled in l the hnlenee arm and extending lengthwise 20 thereof, and a driving connection between said shafts.

In testimony whereof I have signed this specification in the presence of two subserih ing witnesses.

the hnlnnee arm rigidly connected with the casing, smother l0 shaft journaled in the balenee arm and extending lengthwise thereof. and meshing gears on the said shafts.

3. he combination of the stand, the support pivoted to the stand to swing in 1 hori- 15 zontal plane, the casing pivoted to the sup FRED K. PRIEST.

\VitneSseSI JOSEPH L. CLOUGH, WM. A. NELSON. 

